<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

{$arr.name}--{$arr.age}
<br>
{$obj->name}--{$obj->age}--{$obj->fn()}--{$obj::PI}
<br>
{$Request.get.id}
</body>
</html>